Zum Problem der Verzweigung der periodischen Lösungen in gewissen Klassen von Differential-Differenzensystemen neutralen Typs. (Russian) Zbl 0324.34073
MSC:
34K99 | Functional-differential equations (including equations with delayed, advanced or state-dependent argument) |
34K05 | General theory of functional-differential equations |
34C25 | Periodic solutions to ordinary differential equations |